Montvalley Short-Haul Lines, Inc.
Billing Study Part II
Fraction Nonconforming (p) Chart
This spreadsheet is designed for up to 50 samples. Enter data ONLY in yellow-shaded cells.
Click on the sheet tab to display the control chart (some rescaling may be needed).
Sample Fraction Standard
Sample Value Size Nonconforming LCLp CL UCLp Deviation
1 6 20 0.300 0.000 0.305 0.614 0.103
2 6 20 0.300 0.000 0.305 0.614 0.103
3 7 20 0.350 0.000 0.305 0.614 0.103
4 7 20 0.350 0.000 0.305 0.614 0.103
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0.700
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% Non – conforming
Sample number
Attribute (p) Chart p Values
Lower Control Limit
Center Line
Upper Control Limit